Bill and quote glossary: plain-English meanings of confusing pricing terms
Short answer
Most confusing bill lines fall into a few groups: how labour is counted (flat rate, time and materials), what is not yet fixed (allowances, change orders), extra fees (trip, diagnostic, shop supplies, facility fees) and insurance terms (allowed amount, balance billing). Knowing the term tells you the right question to ask; it does not tell you whether a specific charge is fair.
This glossary explains terms people commonly see on contractor quotes, home service invoices, auto repair estimates and medical or dental bills. Definitions are general and educational. Contracts, local law and insurance plans can define terms differently, so the wording in your own document controls.
Each entry includes a question to ask the business. Where we have a deeper guide, it is linked at the end of this page.
Contractor and renovation terms
| Term | Plain meaning | Ask |
|---|---|---|
| Scope of work | The written description of exactly what will be done and delivered. | Is everything I expect, including cleanup and disposal, written here? |
| Fixed price (lump sum) | One agreed price for the defined scope. | What events could still change the price? |
| Time and materials (T&M) | You pay for hours worked plus materials, often with a markup. | What is the hourly rate, markup, and a not-to-exceed amount? |
| Unit pricing | A price per unit, such as per square foot or per fixture. | How will final quantities be measured? |
| Allowance | A placeholder budget for items not yet chosen, like tile or fixtures. | What happens if my selection costs more or less? |
| Change order | A written change to scope, price or schedule after signing. | Will every change be priced and signed before work proceeds? |
| Contingency | Money set aside for unknowns. | Who controls it, and is unused contingency returned? |
| Deposit | Payment before work starts. Some states and provinces limit or regulate it. | Is this amount allowed where I live, and what does it cover? |
| Progress payment / draw | Payments tied to stages of work. | Is each payment tied to a completed, checkable milestone? |
| Retainage (holdback) | A portion held back until completion. Some Canadian provinces set statutory holdbacks. | How much is held and when is it released? |
| Mechanic's lien (construction lien) | A claim against property by an unpaid contractor, subcontractor or supplier. | Will you provide lien waivers or releases as I pay? |
| Permit fee | Charges from the local authority for required permits and inspections. | Is the permit included, and who applies for it? |
Home service call terms
| Term | Plain meaning | Ask |
|---|---|---|
| Trip / dispatch fee | A charge for coming to your home, separate from repair work. | Is it credited toward the repair if I proceed? |
| Service call minimum | The lowest charge for any visit, often covering a first block of time. | How much time does the minimum include? |
| Diagnostic fee | A charge to find the cause before quoting a repair. | Will I get a written repair price before more work? |
| After-hours / emergency rate | Higher pricing for nights, weekends or holidays. | What is the rate, and could this safely wait? |
| Flat-rate pricing | A set price per task from a price book, regardless of actual time. | What exactly does this task price include? |
| Parts markup | The difference between what the business pays for a part and what it charges. | Is the part new, and what warranty comes with it? |
Auto repair terms
| Term | Plain meaning | Ask |
|---|---|---|
| Book (flat-rate) hours | Labour billed from a standard time guide, not the clock. | What is the hourly rate and the book time for this job? |
| Shop supplies | A charge for small consumables like rags and cleaners. | How is it calculated, and is there a cap? |
| Core charge | A refundable deposit on a part until the old part is returned. | Has the core been credited? |
| OEM / aftermarket / remanufactured | Factory part, third-party part, or a rebuilt used part. | Which type is quoted, and what warranty applies? |
| Authorization | Your approval for specific work and price. | Will you call before doing anything not on this estimate? |
The FTC advises getting a written estimate, asking for old parts back, and understanding warranties. Some states and provinces require written estimates or limit charges above an estimate without approval.
Medical and dental bill terms
| Term | Plain meaning | Ask |
|---|---|---|
| Chargemaster price | A hospital's list price, often higher than insurers pay. | What is the discounted cash price or insured rate? |
| Facility fee | A charge for using the hospital or clinic setting, separate from the clinician. | Why is a facility fee billed for this visit? |
| Allowed amount | The maximum a health plan pays for a covered service. | Is my bill based on the allowed amount? |
| Balance billing | Billing you the difference between the charge and the allowed amount. | Does the No Surprises Act protect me here? (US) |
| UCR (usual, customary and reasonable) | What a plan considers typical for a service in an area. | How was the UCR figure set? |
| Explanation of benefits (EOB) | Your insurer's statement of what was billed, paid and owed. It is not a bill. | Does the provider's bill match my EOB? |
| Good faith estimate | A required estimate for uninsured or self-pay US patients. | Can I have it in writing before the service? |
Ask for an itemized bill first
Most billing questions are easier once you have an itemized statement with codes and dates. US patients can review No Surprises Act protections at CMS. In Canada, ask which services fall outside provincial coverage.
The one thing to remember
A term tells you which question to ask
Naming a charge does not make it fair or unfair. Use the term to ask a specific, written question about your own bill.
Want a second set of eyes on it?
Upload a photo or PDF of the bill or quote, or paste the text. You'll get a plain-English assessment of whether the price looks normal, what stands out, and what to ask next.
Common questions
Is a trip fee the same as a diagnostic fee?
Not always. A trip fee covers coming out; a diagnostic fee covers finding the problem. Some businesses combine them. Ask what each covers and whether either is credited toward the repair.
What is the difference between an allowance and a contingency?
An allowance budgets for items you have not chosen yet. A contingency covers unknowns that may come up. Both can change your final price.
Is the chargemaster price what I have to pay?
Often it is not what insurers pay, and many hospitals offer self-pay discounts or financial assistance. Ask for the cash price and assistance policy.
Will you add more terms?
Yes. We expand this glossary over time and link each term to deeper guides as they are published.
Keep reading
Is a trip or service call fee normal?
Separate the cost of getting someone to your door from diagnosis and the repair itself.
Is it normal for a mechanic to charge a diagnostic fee even if I decline the repair?
What diagnostic work buys you, and what to clarify before leaving the keys.
Is it normal for an ER bill to include a separate facility fee?
Why the hospital and the doctor bill separately, and what you can actually do about the facility charge.
How to read a medical bill
Itemised bills vs summaries, the EOB, coding errors, facility fees, and what to request first.
How much should a roof replacement cost?
Squares, tear-off, decking, underlayment, flashing — why bids differ so much.
Sources
- HealthCare.gov glossary — Definitions of allowed amount, balance billing, UCR and EOB.
- CMS: No Surprises Act — Balance billing protections and good faith estimates in the US.
- CMS: Hospital price transparency — Hospital standard charges, including gross charges and cash prices.
- FTC: Auto repair basics — Written estimates, parts types, returning old parts, warranties.
- FTC: Hiring a contractor — Written contracts, payment schedules and lien waivers.
Last reviewed October 2026. This article explains how prices and bills are structured in general terms, and is not a price guarantee, because what's reasonable depends on your location, scope and market. Educational information only — not professional, legal or financial advice. See our disclaimer and browse the full cost guide library.